It's so important to me. do you know the three-parameter lognormal threshold formula?
I need to Excel solver function. A probability distribution of outcomes that is symmetrical or forms a bell curve is called a normal distribution. A log-normal distribution can be formed from a normal distribution using logarithmic mathematics.
The error message indicates that there was a problem in estimating the gradient of the objective function. There are several reasons this could happen, but the most likely is that one of the parameters is becoming negative or causing negative values during the distribution fitting/optimization process
Thank you.